Synthesis of 2-aminothiazoles from methylcarbonyl compounds using a Fe3O4 nanoparticle-N-halo reagent catalytic system

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64749-64755 ◽  
Author(s):  
Masoud Sadeghi ◽  
Javad Safari ◽  
Zohre Zarnegar
Keyword(s):  
Catalytic System ◽  
Fe3o4 Nanoparticle ◽  
Catalytic Systems ◽  
System P

An efficient protocol is developed for the synthesis of 2-aminothiazoles from unfunctionalized methylcarbonyl compounds using Fe3O4 nanoparticle-N-halo reagent catalytic systems.

scholarly journals Mini-Review on the Synthesis of Furfural and Levulinic Acid from Lignocellulosic Biomass

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1234
Author(s):  
Zhiwei Jiang ◽  
Di Hu ◽  
Zhiyue Zhao ◽  
Zixiao Yi ◽  
Zuo Chen ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Lignocellulosic Biomass ◽  
Catalytic System ◽  
Levulinic Acid ◽  
Value Added ◽  
Environmental Issues ◽  
Alternative Route ◽  
Catalytic Systems ◽  
Renewable Biomass ◽  
Platform Chemicals

Efficient conversion of renewable biomass into value-added chemicals and biofuels is regarded as an alternative route to reduce our high dependence on fossil resources and the associated environmental issues. In this context, biomass-based furfural and levulinic acid (LA) platform chemicals are frequently utilized to synthesize various valuable chemicals and biofuels. In this review, the reaction mechanism and catalytic system developed for the generation of furfural and levulinic acid are summarized and compared. Special efforts are focused on the different catalytic systems for the synthesis of furfural and levulinic acid. The corresponding challenges and outlooks are also observed.

Atom-transfer radical addition of fluoroalkyl bromides to alkenes via a photoredox/copper catalytic system

2021 ◽  
Author(s):  
Vladislav S. Kostromitin ◽  
Artem A. Zemtsov ◽  
Vladimir A. Kokorekin ◽  
Vitalij V. Levin ◽  
Alexander D. Dilman
Keyword(s):  
Catalytic System ◽  
Radical Addition ◽  
Atom Transfer ◽  
Alkyl Bromides ◽  
System P ◽  
Atom Transfer Radical Addition

A method for the addition of fluorinated alkyl bromides to alkenes is described.

A novel enantioselective synthesis of 6H-dibenzopyran derivatives by combined palladium/norbornene and cinchona alkaloid catalysis

2015 ◽  
Vol 13 (8) ◽  
pp. 2260-2263 ◽  
Author(s):  
Di Xu ◽  
Li Dai ◽  
Marta Catellani ◽  
Elena Motti ◽  
Nicola Della Ca’ ◽  
...  
Keyword(s):  
Catalytic System ◽  
Enantioselective Synthesis ◽  
Cinchona Alkaloid ◽  
System P ◽  
First Time

Chiral dibenzopyran derivatives were obtained by cinchona alkaloid, as organocatalyst, in combination, for the first time, with palladium/norbornene catalytic system.

Cobalt(ii)-catalyzed chelation-assisted C–H iodination of aromatic amides with I2

2018 ◽  
Vol 54 (11) ◽  
pp. 1359-1362 ◽  
Author(s):  
Yadagiri Kommagalla ◽  
Ken Yamazaki ◽  
Takuma Yamaguchi ◽  
Naoto Chatani
Keyword(s):  
Catalytic System ◽  
Cobalt Metal ◽  
System P

An air stable and inexpensive cobalt-metal, mild and efficient catalytic system.

scholarly journals Ruthenium-Based Catalytic Systems Incorporating a Labile Cyclooctadiene Ligand with N-Heterocyclic Carbene Precursors for the Atom-Economic Alcohol Amidation Using Amines

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2413 ◽  
Author(s):  
Cheng Chen ◽  
Yang Miao ◽  
Kimmy De Winter ◽  
Hua-Jing Wang ◽  
Patrick Demeyere ◽  
...  
Keyword(s):  
Catalytic System ◽  
High Resolution Mass Spectrometry ◽  
Amide Bond ◽  
Catalyst Loading ◽  
Catalytic Systems ◽  
Amide Bond Formation ◽  
Highly Active ◽  
Metal Catalyzed ◽  
Ru Species

Transition-metal-catalyzed amide-bond formation from alcohols and amines is an atom-economic and eco-friendly route. Herein, we identified a highly active in situ N-heterocyclic carbene (NHC)/ruthenium (Ru) catalytic system for this amide synthesis. Various substrates, including sterically hindered ones, could be directly transformed into the corresponding amides with the catalyst loading as low as 0.25 mol.%. In this system, we replaced the p-cymene ligand of the Ru source with a relatively labile cyclooctadiene (cod) ligand so as to more efficiently obtain the corresponding poly-carbene Ru species. Expectedly, the weaker cod ligand could be more easily substituted with multiple mono-NHC ligands. Further high-resolution mass spectrometry (HRMS) analyses revealed that two tetra-carbene complexes were probably generated from the in situ catalytic system.

Photoinduced controlled radical polymerization of methacrylates with benzaldehyde derivatives as organic catalysts

2017 ◽  
Vol 8 (23) ◽  
pp. 3574-3585 ◽  
Author(s):  
Wenchao Ma ◽  
Xianhong Zhang ◽  
Yuhong Ma ◽  
Dong Chen ◽  
Li Wang ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Radical Polymerization ◽  
Catalytic System ◽  
Controlled Radical Polymerization ◽  
System P ◽  
Benzaldehyde Derivatives ◽  
Organic Catalysts

Under 23 W CFL irradiation, block copolymers are obtained starting from a Pn-I macroinitiator in the presence of a benzaldehydic molecule-based catalytic system.

Synthesis of polyamides using palladium-on-carbon (Pd/C) as a heterogeneous, reusable and ligand-free catalytic system

RSC Advances ◽  
2015 ◽  
Vol 5 (114) ◽  
pp. 93773-93778 ◽  
Author(s):  
Anilkumar Satapathy ◽  
Sandip T. Gadge ◽  
Takehiko Sasaki ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Catalytic System ◽  
Basic Problem ◽  
Catalyst Recovery ◽  
Excellent Yield ◽  
System P ◽  
Ligand Free ◽  
Palladium On Carbon

Polyamide has been synthesized by using Pd/C as a heterogeneous, phosphine-free and reusable catalytic system. The catalyst solves the basic problem of catalyst recovery and furnishes good to excellent yield of polyamides.

Efficient and phosphine-free bidentate N-heterocyclic carbene/ruthenium catalytic systems for the dehydrogenative amidation of alcohols and amines

2019 ◽  
Vol 6 (5) ◽  
pp. 563-570 ◽  
Author(s):  
Xuan-Jun Wu ◽  
Hua-Jing Wang ◽  
Zhao-Qi Yang ◽  
Xiao-Sheng Tang ◽  
Ye Yuan ◽  
...  
Keyword(s):  
Catalytic System ◽  
Catalytic Systems ◽  
Amide Synthesis

An efficient and phosphine-free bidentate NHC/Ru catalytic system was discovered for the dehydrogenative amide synthesis from alcohols and amines.

Solvent-free oxidative cleavage of epoxy fatty acid methyl esters by a “release and capture” catalytic system

2019 ◽  
Vol 21 (3) ◽  
pp. 560-566 ◽  
Author(s):  
Meizhen Lu ◽  
Libo Peng ◽  
Qinglong Xie ◽  
Ni Yang ◽  
Hailun Jin ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Green Synthesis ◽  
Catalytic System ◽  
Vegetable Oil ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Epoxy Fatty Acid ◽  
Acid Methyl ◽  
System P ◽  
Oil Derivatives

A green synthesis of bio-aldehydes from vegetable oil derivatives is provided by a WO3/H2O2-based “release and capture” catalytic system.

Dawson-type polyoxometalate-based vacancies g-C3N4 composite-nanomaterials for efficient photocatalytic nitrogen fixation

2019 ◽  
Vol 6 (11) ◽  
pp. 3315-3326 ◽  
Author(s):  
Xiao-Hong Li ◽  
Wei-Lin Chen ◽  
Peng He ◽  
Ting Wang ◽  
Ding Liu ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Catalytic System ◽  
Defect Structure ◽  
Composite Nanomaterials ◽  
Self Healing ◽  
Mild Conditions ◽  
System P

POM@V-g-C3N4 show outstanding photocatalytic N2 fixation activities at mild conditions under illumination due to the excellent POM properties and rich defect structure. The reaction can form a self-healing, recyclable N2-fixing catalytic system.

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